Time-alarm mechanism.



IN VENTOF/ Patented Mar. I3, I900.

akarlea'b'chn A TTORNE rs.

C SCHMIDT TIME ALARM MECHANISM.

(Application filed mm. m, 1899.)

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UNITED STATES PATENT OFFICE.

CHARLES SCHMIDT, OF NEW ORLEANS, LOUISIANA.

TIME-ALARM MECHANISM.

SPECIFICATION forming part of Letters Patent No. 645,334, dated March13, 1900.

Application filed March 17', 1899. Serial No. 709,471. (No model.)

To all whom, it may concern:

Be it known that I, CHARLES SCHMIDT, residing at New Orleans, in theparish of Orleans and State of Louisiana, have invented a new and usefulImprovement in Signal Mechanism, of which the following is aspecification.

My invention is an improvement in apparatus in the nature of an alarmmechanism intended for use in factories, school-houses, residences, orelsewhere where it is designed to give signals at certain times and themechanism is to be set in advance to secure the sounding of the alarm atsuch time; and the invention consists in certain novel constructions andcombinations of parts, as will be hereinafter described, and pointed outin the claims.

In the drawings, Figure 1 is an elevation of a clock mechanism providedwith my improvements. Fig. 2 is a detail view illustrating the rim ofthe main wheel and the pins operating therein. Fig. 3 is a detail edgeview of a portion of the main wheel and the lever operated thereby.Figs. 4 and 5 are detail views illustrating the means for releasing thefiy-wheel of the ordinary striking mechanism. Fig. 6 is a detail sideview of the notched wheel of the ordinary striking mechanism, and Fig. 7is a detail view showing the cam-surface which is provided on said wheelfor the purpose of operating the special-alarm mechanism presentlydescribed.

I have shown the improvements applied to a common American eight-daystrike wooden clock having a fly-wheel A, by which to release the arm Bfrom the notched wheel 0, all of which features are common in the clockreferred to and operate in the present instance in the usual manner.

In carrying out my invention I provide the main wheel D, which is gearedat d with the clock-train and is arranged to revolve once in twenty-fourhours. This main wheel D is provided at every half-hour interval with apin E, arranged to be protruded to operate a lever F, presentlydescribed. The pins E preferably operate through openings D,

, formed in the rim of the wheel D, and such pins are provided at theirinner ends with arms E, which operate in radial notches D also formed inthe rim of the wheel D. These arms E form handles for manipulating thepins E, and they are extended at their inner ends 6' to engageelevations or flanges (Z on the main wheel, whereby the pins E may beheld in any desired adjustment. By this construction it is apparent anypin E may be adjusted outward to properly operate the alarm mechanismwhen such pin comes to the position in which it will operate the leverF. This lever F is pivoted at F, is arranged at one end for engagementby the pin E of the wheel D, and has its other end connected by a wire Fwith a second lever G, which is arranged to release the fly-wheel A ofthe ordinary striking mechanism. This lever G is pivoted between itsends, is connected at one end to the wire F and has at its other end alateral pin g, which is movable into and out of the path of the bladesof the fly-wheel A, as shown in Figs. A and 5.

In the operation of the described construction the pin E of the mainwheel will engage the lever F and tilt the same, causing it to operatethe lever G to move the pin g out of the path of the fly-wheel, so thelatter will be released, and the arm B will be lifted out of the notch Oof the wheel 0, permitting such wheel to move to sound the ordinarystriking mechanism in the usual manner. In order that the wheel 0 mayeffect the operation of the special alarm, I provide such wheel 0 with aseries of cams II, having at their juncture square shoulders H andrising from the inner end of one shoulder to the outer end of thesucceeding shoulder, as will be understood from Figs. 1 and 7. An arm orlever I is pivoted at i and is arranged at one end t" to ride upon thecams H, whereby to rock its other end i to cause the same to operate acircuitcloser at J, whereby to open the electric cir- ICC comprising themain wheel having peripheral openings and radial notches correspondingto said openings, the pins movable radially in said openings and havingarms operating in the radial notches and serving as handles by which toprotrude and withdraw the pins, means for holding the pins in anydesired adjustment, the clock-train geared with the main wheel, a leverarranged for operation by the projected pin of the main wheel, a secondlever connected with the said first lever, the usual striking mechanismhaving its flywheel arranged to be held and released by the said secondlever,the special alarm,and means whereby said special alarm may beoperated by the ordinary striking mechanism, substan-' tially as setforth.

In an apparatus substantially as described,the combination with thealarm-wheel having notches and provided with the surface composed ofaseries of cams, the special-alarm mechanism, and an arm or leverarranged at one end to operate the special-alarm mechanism and at itsother end to ride upon the cams of the alarm-wheel, substantially as setforth.

4. In an apparatus substantially as described, the combination of theusual mechanism having a fly-wheel and the series of cams on itsstriking-wheel, the special-alarmoperating lever I arranged to beoperated by said cams, a stop movable into and out of the path of thefly-Wheel, a main wheel having movable pins or parts arranged to beprojected, and intermediate devices between said main wheel and the stopfor the fiy-wheel, whereby the parts on the main wheel when projectedmay be caused to adjust the stop out of the path of the flywheelsubstantially as set forth.

5. An apparatus substantially as described comprising the clock-train,the main wheel driven thereby and having parts arranged to be projected,a lever arranged for operation by the projected parts of the main wheel,a second lever connected with the first lever, the fly-wheel arranged tobeheld and released by the said second lever, the special-alarmmechanism, and means whereby the special alarm may be operated by theordinary striking mechanism substantially as set forth.

6. In an apparatus substantially as described, the combination of theclock mechanism having a iiy-Wheel and striking-Wheel, the special-alarmmechanism arranged for operation by the striking-wheel, the main wheelhaving parts arranged to be projected, stop devices movable into and outof the path of the fly-wheel,,and devices connected with said stopdevices and arranged for operation by the projected parts of the mainwheel substantially as set forth.

CHARLES SCHMIDT.

Witnesses:

H. Tosso, P. COUGOT.

